<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        * {
            margin: 0;
            padding: 0
        }
        
        ul {
            list-style: none
        }
        
        body {
            background-color: #333;
        }
        
        .nav {
            width: 800px;
            height: 42px;
            margin: 100px auto;
            background: url(images/rss.png) right center no-repeat;
            background-color: #fff;
            border-radius: 10px;
            position: relative;
        }
        
        .nav li {
            width: 83px;
            height: 42px;
            text-align: center;
            line-height: 42px;
            float: left;
            cursor: pointer;
        }
        
        .nav span {
            position: absolute;
            top: 0;
            left: 0;
            width: 83px;
            height: 42px;
            background: url(images/cloud.gif) no-repeat;
        }
        
        ul {
            position: relative;
        }
    </style>
</head>

<body>
    <div class="nav">
        <span id="cloud"></span>
        <ul id="navBar">
            <li>北京</li>
            <li>上海</li>
            <li>广州</li>
            <li>深圳</li>
            <li>武汉</li>
            <li>厦门</li>
            <li>杭州</li>
            <li>西安</li>
        </ul>
    </div>